Beam lock for looms



9 EH E w 5 il 1 1 T1 Inventor.

June 17, 1930. c: D. BROWN BEAM LOCK FOR LOOMS Filed Nov. 6, 192a Patented June 17,1930

, CARL 1). BROWN, OF HOPEDALE, MASSACHUSETTS,

assrenoa TO. DR-APER coaroRA TION, 'OE HOPEIDALE, MASSACHUSETTS, A CORPORATION OFMAINE BEAM LOOK FOR LOOMS Application filed November 6, 1928 This invention relates to beam locks for looms and is particularly directed to means enabling the operator properly to adjust the gudgeon journal to maintain the correct tolerance between the ournal and the gudgeon after wear has taken place.

In the development of this invention certain major requirements for efficiency in the operation of a loom arerecognized. In order m to produce uniform resultseach element of the loom must operate efficiently and each element must be perfectly co-ordinated with the other elements. It is one of the main objects of this invention to provide the proper coordination between those elements of the loom WhlCll maintain the tension in the warps and th'emeans for journaling the warp beam. A further object of the invention is to provi'de means to enable the gudgeon journal 10 be opened readily in order to effect a change of beams. A further object of the invention is to provide a vsimple and effective means to adjust the journal to accommodate 'g'udgeons of various sizes or to take up the journal after wear has reduced the size of the gud'geon or enlarged the journal or both.

A further object of the invention is to provide a means positively to lock the journal in a predetermined accurately adjusted position irrespective of the pressure exerted by the locking means and irrespective of frequent opening and closing of the journal.

A further object of the invention is to provide a means which will permit the proper adjustment of the journal after wear has taken place to a relatively great extent.

These and other objects and features will more fully appear from the accompanying description and drawings and will be particularly pointed out in the claims.

A preferred embodiment of the invention is illustrated in the drawings in which:

Fig. 1 is a plan view of aportion of a loom embodying the invention and illustrating the manner in which it is applied to the loom.

Fig. 2 is a side elevation, on a larger scale. Fig. 8 is a cross section on line 8-3 2. A preferred embodiment of the invention is herein illustrated which comprises in gen- Serial No. 317,556.

eral a bearing block adapted to be attached to the loom side and in which there is an open bearing to receive the beam gudgeon. Pivoted in the block is a l' )earingclosing member arranged to swing into open position and having thereon one member of a stop device which co-operates with a vertical face upon the block to determine the closed position of the bearing closing 1ne1nber.' Means are provided in the form of an adjustable eccentric at the pivot point tovary the size of the journal formed by the two bearing members. Due to the great 'weight-ofa beam and the warp mass thereon, it is inevitable that wear upon the gudgeons and the gudgeon journals 5 will take place at a relatively rapid rate. Such a condition requires frequent replacement of parts or it means that the loom must he run with; excessive play in the gudgeon journals. In the latter case jumping of the 7 gudgeon in the journal will occur causing irregularities in the product of the loom. The present invention is designed to overcome this fault by providing means accurately "to adjust the journal as wear takes place there- 7s by maintaining it at proper efficiency for a long period of time. I

The proper running ofthe loom s depend cut to a large extent upon maintaining a uniform tension in the warp. The take-up and let-off mechanisms cannot function properly if the warp beam has a tendency to jump on the beat-up which is bound to take place with a badly worn gudgeon journal. Furthermore, it is quite as undesirable that the beam 5 operate against the friction of a tight'journals In some instances beam locks are'designed to take up wear by allowing a locking means to exert a pressure directly upon the gudgeon which introduces undesirable fric- '90 tion at this point. The present invent on providesa stop which determines the'exact'posn tion of the bearing members thus preventnig the locking means from exerting a'pressure upon the g-udgeon. a

'lVhile'the device as herein illustrated s made detachable therefrom, it. m'ay'nevertheless be constructed as an integral part of the loom side. i To support the beam a beam lock inust be provided for both the right and left 101) loom sides. Only the right hand beam lock is illustrated herein, it being understood, however, that the left hand lock is similar thereto. The lock is shown as mounted upon the loom side 1. A bearing block 2 is adapted to be bolted to the loom side as by bolts 3. In order to insure a firm support for the beam, the block is provided with a lateral extension '4; which overlies the shoulder 5 of the loom side. The block 2 is provided with an open bearing 6 which is substantially semi-cylindrical in form and disposed laterally of the loom side. .The bearing 6 receives the gudgeon 7 of the beam 8. Detachable means are provided to lock the gudgeon in place which comprises a bearing closing member 9 having a substantially semi-cylindrical bearing 10 to co-operate with-the bearing 6 to form the gudgeon journal. The member 9 has a; rearwardly and downwardly extending arm 11 in the end of which is a slot 12. An eccentric 13 is adjustably mounted in a bifurcated extension 14 of the block 2. The extension 14 serves as a temporary support for the beam gudgeon when the latter is being placed in position on the loom. In order to facilitate the use of this extension for that purpose a notch 15 is formed therein which receives the gudgeon'and prevents displace: ment thereof during the replacing operation.

The eccentric 13 has two cylindrical portions 16 and 17 whose axes are in line and which have a bearing in the two legs 18 of the bifurcated extension 1 1. The central cylindrical portion 19 of the eccentric has its axis parallel to, but out of alignment with the axes of the portions 16 and 17. The arm 11 of the bearing closing member 9 is situated between the legs 18 of the extension 1 1 and receives in the slot 12in the end thereof the central portion 19 of the eccentric. By virture of this construction, the bearing closing member 9 may swing bodily about the eccentric as a pivot point, thus permitting the journal to be opened to exchange or remove a beam.

The block 2 has an upstanding post 20 having a vertical face 21 which acts as a stop to limit the inward movement of the member 9. The member 9 has a vertical post 22 extending upwardly from the cylindrical bearing 10. The post 22 has a line contact projection 23 which engages the vertical face 21 on the post 20 "when the ournal is in closed position. Detachable locking means are provided to insure that he beam shall be held securely against jumping when the beat-up takes place. Nearits top and adjacent to the vertical face 21. the post 20 is slotted to receive the eye 24 of an eye bolt 27. A pin 26 is fixed in the post 20 and projects through the eye 2 1 of the eye bolt. The upper end of the post 22 is bifurcated to receive the threaded shank 28 of the bolt 27. The shank 28 is of suflicient length to project beyond the outer edge of the post 22 to receive a nut 29. To effect the locking of the journal, the nut is tightened against the post 22 which causes the line contact projection 23 to engage the vertical face 21 on the post 20. To open the journahit is merely necessary to loosen the nut 29, swing the eye bolt out of the bifurcated end of Lll post 22 and then swing the member 9 about the eccentric into open position.

One device is the method of adjusting the journal to take up wear or for any other purpose. Inpractice it is very often the case that the initial size of the gudgeon bearing is much too large for efficient operation of the loom. l Vith the present invention, it is possible to make the initial adjustment very accurately and by making subsequent adjustments to maintain the required tolerance between the gudgeon and the journal.

The eccentric 13 has upon one end a head 30 to receive a wrench by means of which it may be rotated. The eccentric portion 19 therof is so fitted in the slot 12 that upon adjustment of the eccentric of the journal the bearing closing member 9 will pivot about the line contact projection 23. It is possible therefore to adjust the journal after the bearing closing member is locked in place. properly adjusted, the eccentric 13 is locked in position by means of a set screw 31. T hereafter the size of the journal is determined solely by the engagement of the line contact projection 23 with the post 20. Consequently the journal may be opened and closed at will with the assurance that the member 9 Will return to its accurately adjusted position each time it is swung into closed position. Furthermore, when the device is locked by the nut 29, the resulting forces are confined substantially to simple compression of the post 22 and do not in any way tend to distort or cause the bearing closing member to change its position thereby insuring accuracy of adjustment.

The normal procedure in utilizing the advantages of the device are as follows. After placing a full beam in position on the loom, the bearing closing member is swung down upon the gudgeon and locked in position by means of the nut 29 and the eye bolt 27. If this initial adjustment is found not to be correct, a more accurate adjustment may then be made by means of the eccentric.

of the most valuable features of the After this to change the size After the journal has been the vertical face 21 upon initial adjustment has been made and the loom for a certain period, the journal and gudgeon will become worn, which fact is indicated to the operator by the jumping of the beam upon the operator will then take up this excessive play by adjustment of the eccentric. It will thus be seen that by means of this device the beam journal may be maintained at-the peak of efoperated beat-up of the lay. The

. members, a stop to centric adj ustably ficiency at all times by a very simple but accurate adjustment, which is readily made even when the loom is in operation.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is: I

1. A beam lock for looms comprising a bearing block, an open bearing therein, a bearing closing member pivoted thereon and 0a: pable of swinging into open position, a stop to determine the closed position thereof, means at the pivot point movable to adjust the side of the journal formed by said bearing members and means to lock the bearing members in closed position.

2. A beam lock for looms comprising a bearing block, an open bearing therein, a bearing closing member pivoted thereon and capable of swinging into open position, an eccentric at the pivot point adjustable to vary the size of the journal formed by said bearing determine the closed position of said closing member and means to lock said member in closed position.

3. A beam lock for looms comprising a bearing block, an open bearing therein, a bearing closing member pivoted thereon and adapted to swing into open position and having a bearing to co-operate with said open a closed ournal, a stop to debearing to form termine the closed position of said closing member, an eccentric mounted in said block at the pivot point and adjustable to adjust the bearing closing member to take up excessive play in the journal, means to lock said eccentric in adjusted position, and means to lock the bearing closing member in closed position.

At. A beam lock for looms comprising a bearing block, an open bearing therein, an eccentric adjustably mounted in the block, a bearing closing centric to permit bodily movement thereof about the eccentric and also to effect adjustment of the closing member relatively to the bearing block by rotation of said eccentric, a stop having a vertical face acting to limit the movement of the bearing closing member into closed position, means to lock the eccentric in adjusted position and means to lock the bearing member in closed position.

5. A beam lock for looms comprising a bearing block, an open bearing therein, an ecmounted in the block, means to lock said eccentric in adjusted position, a bearing closing member pivoted upon the eccentric and capable of swinging into open position, a bearing in said closing memher to co-operate with said open bearing to form a closed journal, a Vertical face on the block, a line contact projection on the closing member co-operating with said face to form stop, and means to lock' the bearing closing member in closed position.

6. A beam lock for looms comprising a member pivoted upon the ecbearing block adapted to be secured to a loom side, an open bearing therein, an eccentric'adjustably mounted in the block, a bearing closing member pivoted upon the eccentric in such manner as will permit the bearing closing member to swing into open position and also to permit the latter to be adjusted relatively to the bearing blocks by movement of the eccentric, means to lock the eccentric in adjusted position and means to lockthe bearing member in closed position.

7. A beam lock for looms comprising a bearing block adapted to be secured to the loom side, a transverse semi-cylindrical bearing therein, an upright column on the block having a vertical face, a bearing closing memher, a semi-cylindrical bearing therein to co-operate with the bearing in said block to form a closed journal, an extension on said bearing closing member having a line contact projection to engage said vertical face when said bearing closing member is in closed position, an eccentric mounted at the pivot point whereby upon adjustment thereof the bearing closing member will pivot about the line contact to adjust the size of the journal, means to lock the eccentric in adjusted position and means to lock the bearing closing member is closed position.

In testimony whereof, name to this specification.

CARL 1), BROWN.

I have signed my 

